参数资料
型号: M66291GP
元件分类: 总线控制器
英文描述: UNIVERSAL SERIAL BUS CONTROLLER, PQFP48
封装: 7 X 7 MM, 0.50 MM PITCH, PLASTIC, LQFP-48
文件页数: 83/128页
文件大小: 928K
代理商: M66291GP
M66291GP/HP
Rev 1.01 2004.11.01 page 56 of 122
2.28 CPU_FIFO Control Register
CPU_FIFO Control Register (CPU_FIFO_CONTROL)
<Address : H’42>
b15
14
13
12
11
10
9876
54321
b0
IDLY
IVAL
BCLR
Creq
CPU_DTLN
0000
100000
0
00000
----
------
-
---
------
<H/W reset : H'0800>
<S/W reset : ->
<USB bus reset : ->
b
Bit name
Function
R
W
15
Reserved. Set it to “0”.
00
14
IDLY
Isochronous Transmit Delay Set
0 :
Disable of IDLY function
1 :
Enable of IDLY function
13
IVAL
IN Buffer Set/OUT Buffer Status
<When set to OUT buffer>
Read
0:
Disables reading data from the buffer
1:
Enables reading data from the buffer
Write
Invalid (Ignored when written)
<When set to IN buffer>
Read
0 :
Incomplete to write the data to buffer
1 :
Complete to write the data to buffer
Write
0 :
Invalid (Ignored when written)
1 :
Complete to write the data to buffer
(Forced completion : Transmits short packet)
12
BCLR
Buffer Clear
<When set to OUT buffer>
Write
0 :
Invalid (Ignored when written)
1 :
Buffer clear (When the IVAL bit is set to "1")
<When set to IN buffer>
Write
0 :
Invalid (Ignored when written)
1 :
Buffer clear (When the IVAL bit is set to "0")
0
11
Creq
CPU_FIFO Ready
0 :
Enables accessing CPU_FIFO Data Register etc,
1 :
Disables accessing CPU_FIFO Data Register etc,
×
10~0
CPU_DTLN
CPU_FIFO Receive Data Length Register
Stores the receive data length (byte count)
×
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